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What causes air to circulate in a clockwise direction in the Northern Hemisphere?

Currents Tutorial Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect. This deflection is called the Coriolis effect.

What is the average wind direction between the equator and 30 degrees north?

Between about 30 degrees north and 30 degrees south of the equator, in a region called the horse latitudes, the Earth’s rotation causes air to slant toward the equator in a southwesterly direction in the northern hemisphere and in a northwesterly direction in the southern hemisphere. This is called the Coriolis Effect.

Which wind direction is the strongest?

They are fed by polar easterlies and winds from the high-pressure horse latitudes, which sandwich them on either side. Westerlies are strongest in the winter, when pressure over the pole is low, and weakest in summer, when the polar high creates stronger polar easterlies.

What is the direction of the winds between 60 90 degrees?

Polar Easterlies: From 60-90 degrees latitude. Prevailing Westerlies: From 30-60 degrees latitude (aka Westerlies). Tropical Easterlies: From 0-30 degrees latitude (aka Trade Winds).

Why does the wind stop at night?

The wind speed tends to decrease after sunset because at night the surface of the Earth cools much more rapidly than does the air above the surface. If there is a low pressure area or storm in the region the winds will blow day or night.

Does wind ever stop blowing?

Wind is simply high pressure moving towards low pressure. Wind is the atmosphere trying to reach a pressure equilibrium. If the pressure is equalized, there will be no more wind. Which is rare on our planet as different areas are always heating and cooling.

What time of day is usually the windiest?

These gusty surface winds usually begin in the late morning hours, peak in the afternoon, and end by early evening. Winds in the low-levels become much more uniform at night and in predawn hours.

What part of the day has the most wind?

It is found that daily extreme wind speeds at 10 m are most likely in the early afternoon, whereas those at 200 m are most likely in between midnight and sunrise.

Can 70 mph winds break windows?

So with all that said, at what wind speed do windows break? Standard residential windows have DP values between 15 and 50. A DP 15 window can reasonably be expected to sustain winds of roughly 77 mph before shattering. A DP 50 window is expected to sustain winds up to 173 mph.

What part of the day is the windiest?

If you’re asking about surface wind, then all else being equal, you typically get the highest wind speed in the afternoon. The day starts out with a cold pool of air near the surface that separates the slow-moving surface air from the high-speed winds above.

What months are the windiest?

The windiest time of the year is January through April. January and March are tied as the windiest months with an average speed of 9.2 mph.

What is the least windiest place on Earth?


What are the top 10 windiest cities?

Where are the Windiest Cities in the US?

  • Great Falls, MT: 11.4.
  • New York, NY: 11.3.
  • Oklahoma City, OK: 11.3.
  • Wichita Falls, TX: 11.2.
  • Grand Island, NE: 11.2.
  • Fargo, ND: 11.1.
  • Galveston, TX: 11.1.
  • Concordia, KS: 11.0.

What is the windiest city on earth?


What city has the most wind?

America’s windiest major city is Boston, where overall the wind blows two miles per hour faster than in Chicago….Windiest City Each Month.

Month March
City Oklahoma City
MPH 14.3
KPH 23.0

How strong does wind have to be to knock down a person?

Knocking you down would take a wind of at least 70 mph. The terminal velocity, which is the wind speed (falling speed) where the force of the wind equals the force of gravity, for a person is about 120 mph — that would likely knock you down.

Where is the windiest place on Earth?

Which state has greatest wind speed?

U.S. Average Wind Speed State Rank

Rank Average Wind Speed ▼ State / Population
1. 31.44 mph District of Columbia / 633,736
2. 21.32 mph South Dakota / 834,708
3. 21.03 mph Montana / 1,006,370
4. 20.88 mph Wyoming / 575,251

Why is Chicago so windy?

So, Why Is Chicago Called the Windy City? Based on these early records, the nickname “Windy City” originated based on the area’s windstorms and because the people were known for being full of hot air.

Are 11 mph winds strong?

Beaufort Wind Scale

0 — Calm less than 1 mph (0 m/s)
3 — Gentle breeze 8 – 12 mph 3.5-5 m/s
4 — Moderate breeze 13 – 18 mph 5.5-8 m/s
5 — Fresh breeze 19 – 24 mph 8.5-10.5 m/s
6 — Strong breeze 25 – 31 mph 11-13.5 m/s

Is Chicago really windy?

Weather. While Chicago is widely known as the “Windy City”, it is not the windiest city in the United States. Some of the windier cities recorded by the NOAA/NCDC are Dodge City, Kansas, at 13.9 mph (22.3 km/h); Amarillo, Texas, at 13.5 mph (21.7 km/h); and Lubbock, Texas, at 12.4 mph (20 km/h).

What is the most dangerous part in Chicago?

West Garfield Park

What food was invented in the Windy City Chicago?

Foods Invented or Perfected in Chicago

  • Vienna Beef.
  • Twinkie.
  • Wrigley’s Gum.
  • Chocolate Brownies.

Why do they call Chicago shy town?

One of the many nicknames for the city of Chicago, Illinois, Chi-town (or Chi-Town) can be traced back to the early 1900s. Chi is shortened from Chicago and is itself recorded as a nickname for the city (town) even earlier, in the 1890s. If you don’t know by now, I’m talking ’bout Chi-Town!